Robust Manipulation of Magnetism in Dilute Magnetic Semiconductor (Ga,Mn)As by Organic Molecules

Xiaolei Wang; Hailong Wang; Dong Pan; Timothy Keiper; Lixia Li; Xuezhe Yu; Jun Lu; Eric Lochner; Stephan von Molnár; Peng Xiong; Jianhua Zhao

doi:10.1002/adma.201503547

Robust Manipulation of Magnetism in Dilute Magnetic Semiconductor (Ga,Mn)As by Organic Molecules

Adv Mater. 2015 Dec 22;27(48):8043-50. doi: 10.1002/adma.201503547. Epub 2015 Nov 5.

Authors

Affiliations

¹ State Key Laboratory of Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing, 100083, China.
² Department of Physics, Florida State University, Tallahassee, FL, 32306, USA.

PMID: 26540329
DOI: 10.1002/adma.201503547

Abstract

Surface adsorption of organic molecules provides a new method for the robust manipulation of ferromagnetism in (Ga,Mn)As. Electron acceptor and donor molecules yield significant enhancement and suppression, respectively, of ferromagnetism with modulation of the Curie temperature spanning 36 K. Dip-pen nanolithography is employed to directly pattern monolayers on (Ga,Mn)As, which is presented as a novel pathway toward producing magnetic nanostructures.

Keywords: dip-pen nanolithography; magnetic semiconductors; manipulation of magnetism; organic molecules; self-assembly.